WatchSense uses a depth sensor embedded in a wearable device to expand the input space to neighboring areas of skin and the space above it.
Upcoming paper at CHI 2017 by:
Srinath Sridhar,  Max Planck Institute for Informatics, Saarbrücken, Germany
Anders Markussen , University of Copenhagen, Copenhagen, Denmark
Antti Oulasvirta , Aalto University, Helsinki, Finland
Christian Theobalt , Max Planck Institute for Informatics, Saarbrücken, Germany
Sebastian Boring , University of Copenhagen, Copenhagen, Denmark, Denmark
